Shares of YOFC experienced a sharp decline during Monday's intraday trading session, plummeting approximately 5.94%. The drop extended losses for the optical communications stock, which had already seen significant pressure in recent sessions.

The sell-off was primarily driven by market speculation regarding potential delays in carrier centralized procurement. Analysts and traders are concerned that such delays could negatively impact the revenue streams of companies in the optical fiber sector, including YOFC. While the company has stated that no official procurement announcements have been made to confirm these delays, the market sentiment turned cautious, leading to the downward pressure on the stock price.

Adding context to the sector's movement, analysis from China Securities Co. suggested that a high proportion of China's fiber output is now being exported, which may reduce the relative importance of domestic carrier purchases. Furthermore, the recent decline may also be attributed to investor caution ahead of upcoming first-quarter earnings reports, combined with profit-taking after substantial gains previously recorded in the sector.